GH python script "invalid syntax [0:0]" error

Hi all,

My grasshopper-based python3 script is failing with “invalid syntax [0:0]”

The issue looks a lot like RH-83287 described here.

I’m running version 8 SR21 (8.21.25188.17001, 2025-07-07)

Has anyone else hit this issue?

Many thanks,

Nick.

GH_PythonDebugBug.gh (11.6 KB)